198739425 has 24 divisors (see below), whose sum is σ = 329041440. Its totient is φ = 105846400.

The previous prime is 198739397. The next prime is 198739439. The reversal of 198739425 is 524937891.

198739425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198739425 - 2¹⁷ = 198608353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71461 + ... + 74189.

It is an arithmetic number, because the mean of its divisors is an integer number (13710060).

Almost surely, 2^198739425 is an apocalyptic number.

198739425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198739425 is a deficient number, since it is larger than the sum of its proper divisors (130302015).

198739425 is a wasteful number, since it uses less digits than its factorization.

198739425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713 (or 3708 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 198739425 is about 14097.4971182831. The cubic root of 198739425 is about 583.5723093408.

The spelling of 198739425 in words is "one hundred ninety-eight million, seven hundred thirty-nine thousand, four hundred twenty-five".